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STRATEGIES FOR THE EXTENSION OF THE SHELF LIFE OF READY TO EAT PRICKLY PEAR FRUITS
No full textThe prickly pear fruit (Opuntia ficus indica L. Miller) belongs to the Cactaceae family.
The fruit is a berry, composed by an epicarp and the pulp, which represents the
edible portion. At maturation, the epicarp turns yellow, red or white, depending on
the cultivar. In Italy, the prickly pear is mainly cultivated in Sicily (90% of the national
production). The fruit is very sensitive to low storage temperatures (< 5°C) which cause
chilling injuries. The fruits can be successfully commercialized as a ready-to-eat product,
peeled and suitably packaged. The main limit to its production is the formation
of off-flavours due to different factors, such as the growth of microorganism and the
action of endogenous enzymes (lipid oxidation). In fact, the oxidoreductases are directly
responsible for the lipid oxidation, which has influence on the production of off-flavours,
on the structure and on the shelf-life of the fruit. The lipoxygenase (LOX) is a dioxygenase
which catalyzes the oxidation of polyunsaturated fatty acids to hydroperoxides.
The aim of this work was to compare different packaging technologies to extend the
shelf life of ready-to-eat prickly pear fruits. The LOX activity, microbial counts and gas
composition were evaluated for non-treated samples packed in ordinary atmosphere
and in two modified atmospheres having different O2 and CO2 composition (MA1 5%
O2, 2% CO2, 93%N2; MA2 2% O2, 5% CO2, 93% N2) and for samples treated either with
a blanching or with a blanching followed by a dipping in a citric acid solution. The
pretreatment conditions are essential for the LOX activity, in particular the blanching
reduced its activity by at least 30% especially in combination with fruit acidification and
limited the microbial proliferation. As a result of suitable pretreatment and packaging
operations the shelf life of ready-to-eat prickly pears can be successfully extended
MILLIGAN-MORGAN HEMORRHOIDECTOMY VS. LONGO RECTAL MUCOSA PROLAPSECTOMY: CAOMPARISON OF TWO SURGICAL TECHNIQUES
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Recurrence after stapled haemorrhoidopexy
No full textThe surgical procedure of stapled haemorrhoidopexy is now considered safe, and its reliability is improving with experience and technical upgrading. Compared to conventional procedures, the short-term advantages of stapled haemorrhoidopexy include less postoperative pain, faster recovery and healing, whereas the disadvantages of the procedure in the long term include an increased possibility of recurrent prolapse. The percentage of symptomatic prolapse after stapled procedures widely varies in the several clinical trials described in the literature, ranging between 2 and 53.3 %. Many short- and long-term complications of the different treatments for haemorrhoids (conventional, stapled or realized with different new devices) have been reported in the literature. Less evidence is available about how to minimize these undesirable effects of stapling procedures, and there are no studies that describe and classify recurrences and the strategies to deal with them
Recurrence after stapled haemorrhoidopexy
No full textThe surgical procedure of stapled haemorrhoidopexy is now considered safe, and its reliability is improving with experience and technical upgrading. Compared to conventional procedures, the short-term advantages of stapled haemorrhoidopexy include less postoperative pain, faster recovery and healing, whereas the disadvantages of the procedure in the long term include an increased possibility of recurrent prolapse. The percentage of symptomatic prolapse after stapled procedures widely varies in the several clinical trials described in the literature, ranging between 2 and 53.3 %. Many short- and long-term complications of the different treatments for haemorrhoids (conventional, stapled or realized with different new devices) have been reported in the literature. Less evidence is available about how to minimize these undesirable effects of stapling procedures, and there are no studies that describe and classify recurrences and the strategies to deal with them
Milligan-Morgan hemorroidectomy vs. Longo rectal mucosa prolapsectomy: comparisno of two surgical techniques
No full textVariations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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